Mishkat al-Masabih 19 Jihad كتاب الجهاد 54

وَعَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لِلْغَازِي أَجْرُهُ وَلِلْجَاعِلِ أَجْرُهُ وَأَجْرُ الْغَازِي» . رَوَاهُ أَبُو دَاوُد

He reported God’s Messenger as saying, “The fighter gets his reward, and the one who equips him gets his own reward and that of the fighter.” Abu Dawud transmitted it.